Automatic telephon e-call



(No Model.) 2 Sheets-Sheet l.

L. CARPENTER. ATI'SLQTI` TELEFHONE GALL. l No., Mimi Pasemmd Mam n 1890.

v nud. Stute of -ewit-eh-hoalrd, and

nnnnr L. ennrnnrnn,` or in nniniroipis, tonnen-ern.

noreinnrie reim-eene zEC/IFICATIGN forming part of Letters Patent No. 422,722, dated Application. filed June 27, 1889. Serial ,To all [rh/om,

15e it known of lliinnen-ioli iff may c0/toc7w/:- that li ilnnnr hurinvrnn, e, in 'the' countyv of llennepin l lllinnesotzi., here invented eertain new und useful improvements in Autol nuit-ie 'llelephone-Unlls, of which the following is a Speeilieution. This invention relnles to improvements in enlls fer telephone systems; und the ohjeet of the invention is to provide un improved! mechanism whieh muy 'he used in eonneelion with u telephone-exf-hninge Le operino theenlll hell upon any desired line nntonmiieztlly and regularly. l Other ohjeetSef--the in-\'entien will appear from Vthefollowingileniled .leslripi ion, teilten in connection with the neeonipmiying draw I inge, in whieh--- Figure reln'eeonin nelevntion el' niy improved ezill ors-lem. Fig'. l :3 is n horizonln-l section on line .1: ,r el' Fig. l. ,i llig. 3 is n Vertlenl Section en line Li/ :A/ of Fig'. l. Figs. l, 5, and o' nre dolnile. i lu tho drawings, 2 represents :i shul't l nionnted in nuiiuhle hearings :ind arranged l to he driven eonstnniilniv by nionnsof a Hnitg n'hle trnin el' genre 3, l, und 5, which may he operated by fi weight (5; or the slinltmuy he I driven by any other yneierred motive power. l

l I l l l l l n l I i pnrinil `:section und Thin` ehnli is provided with :i serios ol.' wheehs or disks F, euch el whieh is provided with i series of eire'nit-elesern 9. ihe cireuit-elosers upon enel. wheel nre arranged in groupe, ns

shown, those upon the .first wheel being ne ranged in groups of two, those upon the l, ond wheel in groupe of ihree,nnd soon. lhel heilt f3 eouneetod ton. wire l0, forniingpnri oi nn electr-ie eirenit. Arranged oipooite l each of the wheels S is n Suitable Spring' lil, against which the prejeetiens 9 upon the disks 8 come in eenteet nii eend wheels are rotated. Ench of the springs ll is connected to n wire l l2, which extends to n suitable Switchboard. I The swi'telehonrd 13 is provided with n series, l 0i' h olespr openings l5, arranged,preferably, [l in vertical rows thereinA The wires l2 extend, preferably, the lull length of .su-id vertienlwires ll fire'eonl 'neetecl to euch el. ihe wires T2 and ex tend l vertically aereos said heard. The holes l5 in the hoard 13 nro euch Jin'oiided upon theiriin l ner Snrl'nee with contact-Strip 17. Enehl with nvinetnllie strip 22 l circuit, and giving the cull.

in w @A t. L.

March Q i890. No, 315,823. (Nonieilel.)

openingl is provided with n, :'-ierios of tho-Si, eeninel'niripsA arranged nt regular intervals upon the inner surfnre ol :anni opening. The wires .ll extend to and eonneet with said ooni'ziet-strips 17 in regular order. For/example, let it he supposed that the wire l2 in oonnoeied to the contnebsprng ll, which in opposite the wheel S, having the prejeetienn thereon arranged in groups of two. IThe wires ll, which :1re eonneeteifl to this 'wire if?, may then nil extend to and he e'onneeted with the first contact-strip in. n-ll ol' nii-id openings. A ineinliie pluie .19 .surrounds the opening l5 sind in connected to the eir iuibwire. 20 represents n. hollow plug, which is adapted lo he iiifit )lint ,i nniw'nieoi the openings*- 15. lliie plug is. provided with n inetnllie .shoulder 2l, which adapted to freine in enr inetwiih the plnte lil, ind also eonnee-L'ed in the i'orwnrd end oi" Snid plug. lho plug novidml nt lis renr end with si ineinl rinngy 2S, whieh is connected with ai lining -lupon the interiorof theplug: This lining il in insulated lroin ihe shoulder 2l and nordnet-.strip 3i?. A. spring' :35 in secured within the plug 2U in connection with the nielnl lining' 2l? und this spring initie-surged to beur upon the ooniuet-strip 32, nud when it hours upon this strip it innkesnn electrical eonneetion between he ring l und the shoulder-2l. 'ihe plugs 2O are innde of different lengths, Athere being ns inuny d ill'erent lengths of plugin ns there nre wheels il upon the shaft 2 und eorresponding eenineeslriliu l? upon the inner suriueeo el the openings l5. when n plugI 2O is inserted in un opening l5, the rin; 2li :it iis end @einen in eontnet with one ol' the Unimet-pieces l?, sind iho eorroiapoinh ingu wire l is thuis brought inte eleetrieatl eenneetion with theplnieli), and theretntion el the' wheel S, bring-ing; its projeetirnis 9 against the eoninetnprhng ll, enunes n. serien of electrical impulses to he nent through this eerresnnnling to the number of wojeetions in eneh. group nlion sind wheel H. ly this menus the enll bells upon the circuit will be operated. When the pension whose eull is reprenented hy the number tline rung hun responded. to the enll in the usual wey, the operator nl` the contro-l elution will insert into ille ylug 2O n plug 2S, having' n ei:'ei.'iit-wiro 3() eentelephonenected thereto. Y This ping moves :L spring away from the contact-strip 22, sind cuts? ont` y the caii-operaiing mechanism amd makes con necton between the Wire 30 and the pirate] 9, and the. telephones will now bein circuit for l claim as my inventionl, In a teiephone-cali,4 the combination, with e switch-board having zr Series of. `openings and a serie@` of Ciicuit-wi1e, of fr hoilmvfping adapted to connect my one of said Wires with the main circnit-wire and. containing separabie circuit-terminals, a ping-adapted to bc inmaticaiiy operaii'ng Seid circuitfciosers, hoi

low eonvacepings adapted io connect :m y one of Said. partir circuits with tieteiephonwcircuits and 4conrnining sepmnfbie circuit-tomain2.1s 'and a ping' adapteifi io ine inserted in sind hollow ping and disconnect Seid cirou it-t'erniinais, substantially as described.

3. In a telephone-cnil, the combination, with n switch-board provided with n series oi' openings haring ci remit-'terminals arranged at inierm'ls 'upon the Walls of said openings, of

wires connected izo Said 13cr1nin2is.,and also connected to other circuitterminals, and a constantly-running mechanism provided with circuit-closers nrramn'edin O"gou s midfada. )ted to close the circuits through seid instfnamed icrmiimis5 subsi-mitiniiy 2S described., Y

fi. The comb'mations with the switch-board having the series of openinge and the series oi circuit-Wires, ci. a hollow ping adapted to connect any one of Said Wires with the main circuit-wire andcontaining Separniiie circuit terminals :ind zr ping; adapted Le be inserted in Said iieiicw plug and diseomiect said circuiifterxni nfl-ifi in testimony whereof l i my hand this 51h (my 0i June, i885).

H ix" ili L. CARPEN"ER.

in presence 012-- A. L, PAUL, A. M. Grimme,

nwe itferennto Sei; 

